Overall Design

From Simplex

The Overall Design Principles of Simplex
  • PRINCIPLE 25: Beginners need simplicity. In particular, they should not have to learn their opponents' bidding system in order for their own system to work well.
  • PRINCIPLE 0: Almost always open, overcall and respond with your clearly longest suit. (That is, except when responding to an opening/overcall of Three of a Suit, when it is often better to bid one's cheapest 4+ card suit.)
  • PRINCIPLE 4: There is no difference in the requirements for opening bids and overcalls. They share the same point-count range and the same suit-length requirements.
  • PRINCIPLE 27: Simplex is designed so that, as far as possible, responses follow the same guidelines as openings and overcalls. For example, the requirements of a suit-change response at the 1-level are identical to those of an opening bid of one of a suit. And a Simplex 2NT rebid by opener has the same requirements as a Simplex 2NT bid by responder.
  • PRINCIPLE 9: Simplex is a fundamentally natural bidding system. The only gadgets used are 2♣ Redshift, 4NT Blackwood, and the Simplex 2NT.
  • PRINCIPLE 10: Responding hands with trump support but less than 10 HCP bid immediately to their total trump level. (For example, after a 1 opening by partner, a hand containing 6 HCP and four cards in the heart suit would immediately raise to 3. Partner is known to have at least five hearts. Add those five to the four that responder has makes nine. Take six from nine means a raise to the 3-level.) Equally if opener has less than 10 HCP but support for responder's suit, he will bid to the total trump level on the second round.
  • PRINCIPLE 11: If a bidder cannot make the first-round bid his hand merits (because the opposition have already taken the auction too high), the bidder simply doubles, with an implied message to partner: "RHO has just taken my opening bid away, and I believe it is safe for you to bid at this or one level higher."
  • PRINCIPLE 14: Simplex is designed so that the contract reached is, on most occasions, dealer-independent. That is, if all four players are Simplex bidders, the same contract should be reached, irrespective of who opened the bidding.
  • PRINCIPLE 24: Apart from the use of double, Simplex never keys its bids off the opponents' bidding. (There is, for example, no concept of a jump overcall relative to an opponent's bid. A bid of the 'enemy suit' is always natural, showing at least three cards in that suit.) The philosophy of Simplex is that each hand is worth a particular bid, or sequence of bids, and if one of those bids cannot be made because of opposition bidding, the appropriate bid is usually to double.





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